US20220070588A1 - Dynamic balance speaker - Google Patents

Dynamic balance speaker Download PDF

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Publication number
US20220070588A1
US20220070588A1 US17/118,543 US202017118543A US2022070588A1 US 20220070588 A1 US20220070588 A1 US 20220070588A1 US 202017118543 A US202017118543 A US 202017118543A US 2022070588 A1 US2022070588 A1 US 2022070588A1
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US
United States
Prior art keywords
vent
speaker
dynamic balance
mounting groove
voice coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US17/118,543
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English (en)
Inventor
I-Ching Lu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hung Tse Electric Co Ltd
Original Assignee
Hung Tse Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hung Tse Electric Co Ltd filed Critical Hung Tse Electric Co Ltd
Assigned to HUNG TSE ELECTRIC CO, LTD. reassignment HUNG TSE ELECTRIC CO, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LU, I-CHING
Publication of US20220070588A1 publication Critical patent/US20220070588A1/en
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/027—Diaphragms comprising metallic materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/029—Diaphragms comprising fibres
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention relates to a speaker, and more particularly to a dynamic balance speaker.
  • a micro speaker generally includes a diaphragm, a voice coil, a support, a tuning paper, a washer, and a magnet.
  • the energized voice coil is subjected to Ampere force in the magnetic field, which causes the voice coil to vibrate.
  • the vibration of the voice coil drives the diaphragm to vibrate. This vibration converts mechanical energy into sound energy and radiates out a signal. It spreads to the human ear through the action of the air medium. Under normal circumstances, the user can hear the relevant sound information.
  • Two sides of the voice coil are provided with two lead wires connected to an external circuit, so as to energize the voice coil. But, in this way, the two lead wires are prone to be different in length.
  • the lead wires need to be glued to the diaphragm, which makes the weights of the voice coil and the diaphragm of the speaker inconsistent. The vibration of the voice coil and the diaphragm is unbalanced, which deteriorates the sound quality of the micro speaker.
  • the primary object of the present invention is to provide a dynamic balance speaker with good sound quality and balanced voice coil vibration.
  • a dynamic balance speaker comprises a diaphragm, a voice coil, a printed circuit board, a base frame, a first tuning paper, a washer, a main magnet, and a U-yoke.
  • the base frame has a central through hole.
  • the printed circuit board is provided with a pair of signal contacts.
  • a bottom of the base frame is formed with a plurality of spaced first vents and a mounting groove in the middle between adjacent two of the first vents. Left and right sides of the mounting groove are provided with positioning grooves.
  • the printed circuit board is adhered and fixed in the mounting groove. Left and right sides of the printed circuit board are provided with positioning portions. The positioning portions are fixed in the positioning grooves, respectively.
  • the first tuning paper is adhered onto the first vents.
  • Two sides of the voice coil are provided with a pair of lead wires that are arranged symmetrically relative to a center of the voice coil. Free ends of the lead wires are fixedly connected to the signal contacts of the printed circuit board, respectively.
  • the lead wires are symmetrical to a center of the printed circuit board.
  • the diaphragm is disposed above the voice coil.
  • the U-yoke is fixed below the through hole of the base frame.
  • the main magnet is fixed in the U-yoke.
  • the washer is disposed on top of the main magnet.
  • the voice coil surrounds the main magnet and the washer.
  • the dynamic balance speaker further comprises a secondary magnet.
  • the secondary magnet is fixed on top of the washer.
  • the secondary magnet generates a magnetic field with a direction opposite to that of a magnetic field generated by the main magnet.
  • the secondary magnet is partially located above the base frame.
  • an inner side wall of the mounting groove is formed with an inclined guide surface.
  • the bottom of the base frame is formed with a second vent.
  • the second vent is spaced apart from the first vents.
  • a second tuning paper is fixed onto the second vent.
  • the second vent is located close to an inner side of the mounting groove.
  • the second vent is spaced apart from the mounting groove.
  • the second vent is smaller than each of the first vents, and the second tuning paper is smaller than the first tuning paper.
  • the voice coil is a voice coil with a paper core or a hollow voice coil without a paper core.
  • the diaphragm is a composite material of a PU (polyurethane) material and an LCP (liquid crystal polymer) material.
  • the diaphragm is a composite material of a PU material and a biofiber material.
  • the diaphragm is a composite material of a foam material and a fiber material, and the composite material is plated with a metal material.
  • the bottom of the base frame is formed with the mounting groove, and the printed circuit board is fixed in the mounting groove, and the lead wires of the voice coil are arranged symmetrically relative to the center of the voice coil.
  • the lead wires of the conventional speaker are adhered to the diaphragm by glue.
  • the lead wires of the voice coil of the present invention are in a suspended state, and are fixedly connected to the printed circuit board by welding.
  • the lead wires are symmetrical to the center of the printed circuit board.
  • the printed circuit board is connected with an external circuit.
  • the lead wires exert the same force on the two sides of the voice coil, so that the weight of the voice coil and the diaphragm is balanced and centered, and the vibration of the voice coil and the diaphragm is balanced.
  • the present invention provides a dynamic balance speaker, which realizes consistent up and down vibration.
  • the speaker will not sacrifice the sound effect of different frequencies because of the balanced vibration, so that the sound curve is flat, and the sound quality of the speaker becomes better.
  • the printed circuit board can be quickly positioned in the mounting groove, so as to realize a precise assembly.
  • the printed circuit board will not sway in the mounting groove, so it is convenient to fix the printed circuit board in the mounting groove by glue.
  • FIG. 1 is an exploded view of the present invention
  • FIG. 2 is a cross-sectional view of the present invention.
  • FIG. 3 is a rear view of FIG. 1 after being assembled.
  • the present invention discloses a dynamic balance speaker, comprising a diaphragm 1 , a voice coil 2 , a printed circuit board 3 , a base frame 4 , a first tuning paper 5 , a washer 7 , a main magnet 8 , and a U-yoke 9 .
  • the base frame 4 has a central through hole 46 .
  • the printed circuit board 3 is provided with a pair of signal contacts 32 .
  • the bottom of the base frame 4 is formed with a plurality of spaced first vents 41 and a mounting groove 43 in the middle between adjacent two of the first vents 41 .
  • the left and right sides of the mounting groove 43 are provided with positioning grooves 45 .
  • the printed circuit board 3 is adhered and fixed in the mounting groove 43 .
  • the left and right sides of the printed circuit board 3 are provided with positioning portions 31 .
  • the positioning portions 31 are fixed in the positioning grooves 45 , respectively.
  • the first tuning paper 5 is adhered onto the first vents 41 .
  • the first tuning paper 5 covers the plurality of first vents 41 and is attached to the underside of the base frame 4 outside the first vents 41 .
  • Two sides of the voice coil 2 are provided with a pair of lead wires 01 that are arranged symmetrically relative to the center of the voice coil 2 .
  • the free ends of the lead wires 01 are fixedly connected to the signal contacts 32 on the inner side of the printed circuit board 3 by welding, respectively.
  • the lead wires 01 are symmetrical to the center of the printed circuit board 3 .
  • the diaphragm 1 is disposed above the voice coil 2 .
  • the U-yoke 9 is fixed below the through hole 46 of the base frame 4 .
  • the main magnet 8 is fixed in the U-yoke 9 .
  • the washer 7 is disposed on top of the main magnet 8 .
  • the voice coil 2 surrounds the main magnet 8 and the washer 7 .
  • the lead wires 01 may be in a curved state to be in contact with the suspended arc-shaped edge of the diaphragm 1 .
  • the bottom of the base frame 4 is formed with the mounting groove 43 , and the printed circuit board 3 is fixed in the mounting groove 43 , and the lead wires 01 of the voice coil 2 are arranged symmetrically relative to the center of the voice coil 2 .
  • the lead wires of the conventional speaker are suspended and adhered on the diaphragm 1 by glue.
  • the lead wires 01 of the voice coil 2 of the present invention are in a suspended state, and are fixedly connected to the printed circuit board 3 by welding.
  • the lead wires 01 are symmetrical to the center of the printed circuit board 3 .
  • the printed circuit board 3 is connected with an external circuit.
  • the lead wires 01 exert the same force on the two sides of the voice coil 2 , so that the weight of the voice coil 2 and the diaphragm 1 is balanced and centered, and the vibration of the voice coil 2 and the diaphragm 1 is balanced.
  • the present invention provides a dynamic balance speaker, which realizes consistent up and down vibration. The speaker will not sacrifice the sound effect of different frequencies because of the balanced vibration, so that the sound curve is flat, and the sound quality of the speaker becomes better.
  • the printed circuit board 3 can be quickly positioned in the mounting groove 43 , so as to realize a precise assembly.
  • the printed circuit board 3 will not sway in the mounting groove 43 , so it is convenient to fix the printed circuit board 3 in the mounting groove 43 by glue.
  • the lead wires 01 are suspended between the diaphragm 1 and the base frame 4 , so that the diaphragm 1 and the lead wires 01 can be independently vibrated synchronously but not interfere with each other.
  • the vibration of the diaphragm 1 is more balanced, which is beneficial for the normal output of signals and realizes a high-fidelity signal output.
  • the printed circuit board is fixed to the support by glue, and the printed circuit board is easy to loosen due to vibration, causing vibration interference.
  • the printed circuit board 3 of the speaker provided by the present invention is finnly adhered in the mounting groove 43 , so that the printed circuit board 3 and the base frame 4 are connected as a whole without vibration interference.
  • the present invention may include a secondary magnet 02 .
  • the secondary magnet 02 is fixed on top of the washer 7 .
  • the direction of the magnetic field of the secondary magnet 02 is opposite to the direction of the magnetic field of the main magnet 8 , so that the secondary magnet 02 and the main magnet 8 are mutually exclusive.
  • the arrangement of the secondary magnet 02 increases the strength of the magnetic field and increases the spread of the magnetic field.
  • the Ampere force received by the energized voice coil 2 increases, which increases the vibration of the voice coil 2 and diaphragm 1 .
  • the first tuning paper 5 and the second tuning paper 6 vibrate up and down evenly, so that the diaphragm 1 vibrates up and down more evenly.
  • the structure of the conventional speaker is limited, and it is difficult to increase the strength of the magnetic field.
  • the secondary magnet 02 and the main magnet 8 form mutual repulsion, so that the force received by the voice coil 2 is increased, and the reaction force of the voice coil 2 on the diaphragm 1 is increased, and the sound quality produced by the speaker of the present invention is better, and the frequency curve of SPL (Sound Pressure Level) of the speaker of the present invention has better performance.
  • the secondary magnet 02 may be partially located above the base frame 4 .
  • the inner side wall of the mounting groove 43 is formed with an inclined guide surface 44 .
  • the inclined guide surface 44 is inclined from the inside to the outside, so that the glue can quickly enter the mounting groove 43 along the inclined guide surface 44 for the printed circuit board 3 to be fixed in the mounting groove 43 .
  • the bottom of the base frame 4 may be formed with a second vent 42 .
  • the second vent is spaced apart from the first vents 41 .
  • a second tuning paper 6 is fixed onto the second vent 42 .
  • the second vent 42 is located close to the inner side of the mounting groove 43 .
  • the second vent 42 is spaced apart from the mounting groove 43 .
  • the second vent 42 is located between the through hole 46 and the mounting groove 43 .
  • the first vents 41 and the second vent 42 are arranged at even intervals, so that the vibration of the voice coil 2 is balanced.
  • the second vent 42 may be smaller than the first vent 41 .
  • the second tuning paper 6 may be smaller than the first tuning paper 5 to reduce the cost.
  • the voice coil 2 may be a voice coil with a paper core or a hollow voice coil without a paper core.
  • the diaphragm 1 may be a composite material of a PU (polyurethane) material and an LCP (liquid crystal polymer) material.
  • the diaphragm 1 may be a composite material of a PU material and a biofiber material, but not limited thereto.
  • the voice coil 2 may adopt other types.
  • the diaphragm 1 may adopt other single-layer or multi-layer sound diaphragm materials.
  • the diaphragm 1 may be a composite material of a foam material and a fiber material. The composite material is plated with a metal material.
  • the diaphragm 1 may be made of a PET material, PET and PU composite material, PEEK and PU composite material, two PEEK materials bonded by glue, or PEEK, PU and PEEK materials bonded in sequence.
  • the glue may be PAR acrylic glue or silicone glue.
  • the diaphragm 1 may be plated with metallic beryllium, metallic titanium, graphite metal, metallic nickel or diamond-like carbon by electroplating. If the hardness of the material is not hard enough, aluminum foil, or aluminum-magnesium alloy metal materials and carbon fiber diaphragm materials, bio-fibers, or other metal or plastic foam materials can be used.
  • the suspended edge is made of a composite material, such as PET, PEN, PEI, PEEK, PU, and TPEE.
  • the circumferential edge of the diaphragm 1 is adhered to the annular step formed on the top of the inner wall of the base frame 4 .
  • a vibration gap for reciprocating the voice coil 2 is formed between the U-yoke 9 and the base frame 4 .
  • the voice coil 2 is sleeved onto the secondary magnet 02 , the washer 7 and the main magnet 8 .
US17/118,543 2020-08-26 2020-12-10 Dynamic balance speaker Abandoned US20220070588A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021814788.7 2020-08-26
CN202021814788 2020-08-26

Publications (1)

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US20220070588A1 true US20220070588A1 (en) 2022-03-03

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US17/118,543 Abandoned US20220070588A1 (en) 2020-08-26 2020-12-10 Dynamic balance speaker

Country Status (3)

Country Link
US (1) US20220070588A1 (zh)
CN (2) CN212649702U (zh)
TW (1) TWM607577U (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220232303A1 (en) * 2021-01-19 2022-07-21 Dongguan Wantai Electronics Technology Co., Ltd. Bluetooth headset speaker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113542995B (zh) * 2021-07-01 2023-02-03 深圳市三德大康电子有限公司 一种骨传导扬声器

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452366A (en) * 1993-02-02 1995-09-19 Kabushiki Kaisha Kenwood Loudspeaker
US20050211499A1 (en) * 2004-01-14 2005-09-29 Hans-Josef Schwarzenberg Loudspeaker diaphragm
US20100203918A1 (en) * 2007-07-31 2010-08-12 Pioneer Corporation Speaker device
US20170223463A1 (en) * 2016-01-29 2017-08-03 Apple Inc. Voice coil having epoxy-bound winding layers
US20180139522A1 (en) * 2015-05-06 2018-05-17 Goertek Inc. Loudspeaker module
KR101873492B1 (ko) * 2017-05-19 2018-08-02 (주)프라임음향 전자음향변환기용 댐퍼
US20190166445A1 (en) * 2016-09-13 2019-05-30 Panasonic Intellectual Property Management Co., Ltd. Loudspeaker diaphragm, method of manufacturing same, and loudspeaker employing same
US20200107093A1 (en) * 2018-09-28 2020-04-02 Fortune Grand Technology Inc. Signal transmission structure for speaker
CN111065031A (zh) * 2019-11-13 2020-04-24 深圳稳泰电声有限公司 喇叭单体结构及装配方法
CN113709633A (zh) * 2020-05-20 2021-11-26 歌尔股份有限公司 振动板和发声装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452366A (en) * 1993-02-02 1995-09-19 Kabushiki Kaisha Kenwood Loudspeaker
US20050211499A1 (en) * 2004-01-14 2005-09-29 Hans-Josef Schwarzenberg Loudspeaker diaphragm
US20100203918A1 (en) * 2007-07-31 2010-08-12 Pioneer Corporation Speaker device
US20180139522A1 (en) * 2015-05-06 2018-05-17 Goertek Inc. Loudspeaker module
US20170223463A1 (en) * 2016-01-29 2017-08-03 Apple Inc. Voice coil having epoxy-bound winding layers
US20190166445A1 (en) * 2016-09-13 2019-05-30 Panasonic Intellectual Property Management Co., Ltd. Loudspeaker diaphragm, method of manufacturing same, and loudspeaker employing same
KR101873492B1 (ko) * 2017-05-19 2018-08-02 (주)프라임음향 전자음향변환기용 댐퍼
US20200107093A1 (en) * 2018-09-28 2020-04-02 Fortune Grand Technology Inc. Signal transmission structure for speaker
CN111065031A (zh) * 2019-11-13 2020-04-24 深圳稳泰电声有限公司 喇叭单体结构及装配方法
CN113709633A (zh) * 2020-05-20 2021-11-26 歌尔股份有限公司 振动板和发声装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Machine translation of CN-111065031-A (Year: 2020) *
Machine translation of CN-113709633-A (Year: 2019) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220232303A1 (en) * 2021-01-19 2022-07-21 Dongguan Wantai Electronics Technology Co., Ltd. Bluetooth headset speaker

Also Published As

Publication number Publication date
TWM607577U (zh) 2021-02-11
CN112333612A (zh) 2021-02-05
CN212649702U (zh) 2021-03-02

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